US Bridges

Pioneer RD over Judith River 011

Good

Judith Basin County, Montana · 4M NE Hobson · Structure no. L23211002+09001

Built
2006
19 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
18
2023 count
Owner
County
County Highway Agency

About this bridge

Pioneer RD over Judith River 011 is a prestressed concrete stringer/multi-beam or girder carrying Pioneer RD over Judith River 011 in Judith Basin County, Montana. It was built in 2006, so it is 19 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18 vehicles a day, roughly 3% of them trucks, projected to reach 19 by 2043. The structure is 105 ft (32 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesPioneer RD
CrossesJudith River 011
Location4M NE Hobson
RouteCounty Highway 23211
StateMontana
Coordinates47.02796, -109.80906
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length105 ft (32 m)
Longest span105 ft (32 m)
Deck width28 ft (8.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18 (2023)
Projected traffic19 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$85,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pioneer RD over Judith River 011 built?

It was built in 2006, making it 19 years old in 2025.

What condition is Pioneer RD over Judith River 011 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Pioneer RD over Judith River 011 carry?

About 18 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Pioneer RD over Judith River 011?

The structure is 105 ft (32 m) long with a longest span of 105 ft (32 m) and a deck 28 ft wide.

Who owns Pioneer RD over Judith River 011?

It is owned by the County Highway Agency.